128056193 has 6 divisors (see below), whose sum is σ = 131105394. Its totient is φ = 125076336.

The previous prime is 128056177. The next prime is 128056207. The reversal of 128056193 is 391650821.

It can be written as a sum of positive squares in only one way, i.e., 121176064 + 6880129 = 11008^2 + 2623^2 .

It is not a de Polignac number, because 128056193 - 2⁴ = 128056177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128056693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32780 + ... + 36477.

It is an arithmetic number, because the mean of its divisors is an integer number (21850899).

Almost surely, 2^128056193 is an apocalyptic number.

It is an amenable number.

128056193 is a deficient number, since it is larger than the sum of its proper divisors (3049201).

128056193 is an frugal number, since it uses more digits than its factorization.

128056193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69343 (or 69300 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 128056193 is about 11316.1916296959. The cubic root of 128056193 is about 504.0421578597.

The spelling of 128056193 in words is "one hundred twenty-eight million, fifty-six thousand, one hundred ninety-three".